The approach
Start with the right question.
Watch boat drift, line angle and lure position to avoid believing you are vertical when you are not.
In practice
Make it useful on the water.
Pause and change lift height while keeping notes on the fish response.
Keep learning
Connect the dots.
Use this guide as a starting point, then compare it with the water you're fishing, the tackle you're using, and your own observations. Good fishing knowledge grows through real practice.